1. Selfishness must always be forgiven you know because there is no hope of a cure.
2. The cure for Ignorance is Inquiry.
Source: Sunan Abi Dawud Book 1, Hadith 336
3. "Use this black seed. For indeed it contains a cure for every disease except As-Sam" And As-Sam is death.
[Jami at Tirmidhi Vol. 4, Book 2, Hadith 2041]
4. Quran Chapter 16
(68) And your Lord revealed to the bee saying: Make hives in the mountains and in the trees and in what they build:
(69) Then eat of all the fruits and walk in the ways of your Lord submissively. There comes forth from within it a beverage of many colours, in which there is healing for men; most surely there is a sign in this for a people who reflect.